Hoofbeats on the Turnpike by Mildred A. Wirt (Penny Parker #11) by Mildred A. Wirt
HOOFBEATS ON THE TURNPIKE is #11 in the Penny Parker Series by Mildred Wirt Benson.
Penny is in need of money, as usual, and is highly interested when a man shows her a clipping offering a reward for any information leading to the capture of the Headless Horseman. Penny and Louise travel to Red Valley to search for the horseman and find themselves trapped in a flood after a dam breaks.
Mildred A. Wirt Benson (1905-2002) was a prolific author of books for young readers. A trained journalist, Benson is best known as a ghostwriter for the Stratemeyer Syndicate. Under the house pen-name Carolyn Keene, Benson completed 23 of the first 25 Nancy Drew mysteries and wrote a number of others until 1984. Benson also wrote her own mystery series, Penny Parker, from the 1930s to the 1950s.